Noob grow

Had a real nightmare germinating, was given some older seeds, 2/8 gelatos took, so now have 2 gelato, 1 critical mass, 1 Kush, 2 Alien Kush, so will be a pick n mix when we come to harvest. As you can see they all germinated over different times, over the last 10 days, but we got there. I'm hoping they'll catch up with each other. I've prepped fabric pots and they're also good to go, did a mix of potting soil, general compost, perlite and worm castings. I have a packet of mycorrhizal, for the transplant in a few weeks Will start dosing a small amount of biobizz grow as of next week, too soon? I'm running a heat pad during the evening to keep the temp up in the tent/soil while the lights are off. Lights seem to be doing ok, I bout a pair of phlizon 2000 cob lights (I know it's not really 2000w) but running the seedlings under one light for now, around 25-30cm above them. So far so good. They're also keeping the tent toasty. Looking forward to firing them both up properly though. I did have them abit higher, but I think they're stretching too much, one was trying to fold on itself, so propped him up. Is there anything else I'm missing at this stage? Watering wise, I'm misting them twice a day (morning an night) with ph balanced water, I play music to them too (❤️) do you think naming them is to far? 🤣 Anyway, good to get going proper. 1 week down, forever to go. Until next week